Find the TRUE Statement:

Option A:

In 2002:

Covered wagons = 71950

Total wagons = 216717

Thus the percentage of covered wagons = $$\frac{71950}{216717}\times\ 100\ =33.2\%$$

In 2003:

The percentage of covered wagons = $$\frac{68467}{214760}\times\ 100\ =31.88\%$$

Since the percentage decreased in 2003, this option is not true.

Option B:

In 2003, special type wagons = 37650

Total wagons = 214760

Percentage = $$\frac{37650}{214760}\times\ 100\ =17.5\%$$

From the above table, it can be observed that the least number of total wagons is in 2003.

After calculating in a similar way, it can be observed that the percentage was maximum in 2003.

Thus, the correct option is B.